Computing-machine



F.- 8 On 0 M Dr PW COMPUTING MACHINE. APPLICATION FILED AUG.25, 1911.

Patented Feb. 17,1920.

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l l I I r 1 l 1| warar q? 7 NM QQN C. R. MORSE.

COMPUTING MACHINE. APPLICATION FILED AUG.25, 1911.

1,330,893. Patented Feb. 17,1920.

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COMPUTING MACHINE.

APPLICATION FILED AUG.25| 19H.

Patented Feb. 17, 1920.

8 SHEETSSHEET 3.

F S R O M Pm C COMPUTING MACHINE.

APPLICATION FILED Aue.2. 1917.

Patented Feb; 17, 1920.

8 SHEETS-SHEET 4.

C. R. MORSE.

COMPUTING MACHINE.

APPLICATION FILED AUG.25| 1911.

Patented Feb. 17, 1920.

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KNR 3% wQ Qk wk m m NW NW Patented Feb. 17,1920.

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F S D. 0 M on F COMPUTING MACHINE.

APPLICATION FILED AUG.25| 19H.

C. R. MORSE.

COMPUTING MA'CHINE.

APPLICATION FILED AUG-25. 1911.

Patented Feb. 17,1920.

8 SHEETS-SHEEI 8.

UNITED STATES PATENT oEEToE.

CHARLES R. MORSE, OF CHICAGO, ILLINOIS, ASSIG-NOR TO THE MORSE ADDING MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA.

COMPUTING-MACHINE.

Specification of Letters Patent.

Patented Feb. 17, 1920.

Application filed August 25, 1917. Serial No. 188,082.

To all whom it may concern:

Be it known that I, CHARLES R. MORSE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Computin -Machines, of which the following is a speci cation.

My invention relates to improvements in computing or calculating machines and concerns more particularly various features of novelty and advantage in appliances of this general character, but more specifically in devices of the type set forth in my earlier United States Letters Patent No. 1,098,353, computing machines, granted May 26, 1914. I11 such prior patented machine, there is a sliding carriage provided with a plurality of selective number-wheels adapted to be operated in succession. One ob ect of the present invention is to avoid the use of numerous small parts in this portion of the appliance, such as small sliding pins, small or short springs, etc. In the present device, this carriage structure is simpler in ,construction, more economical to manufacture, and comprises fewer parts, particularly small parts diflicult to handle in assembling.

The improved appliance is adapted for multiplication as well as other mathematical calculations and in the multiplying operation, instead of having the release key hold down a set of pins which are repeatedly engaged by the sliding racks in the multiplication operation, as in the old device, the new appliance has a shiftable bar adapted to normally engage and restore both the sliding ratchet members and the sliding number wheel racks, but capable of adjustment to avoid restoration of *the ratchet members, thus operating the racks only until the multiplication is completed. The new structure is a refinement in construction, both as to structural features and the cost of manufacture so far as this portion ofthe mechanism is concerned.

In the prior machine, when it was desired to print a sub-total, it was necessary to hold down such key during the down stroke of the operating handle. In the new apparatus, however, We have a. separate sub-total key which is automatically locked down and properly restored to raised position during manipulation of the actuating handle. De-

pression of thesub-total key causes the sliding carriage to travel over into register with the accumulator or totalizer and receive therefrom the amount registered thereon, during which action the key is locked down. Then during the swinging of the operating handle, the sub-total now on the carriage number-wheels is printed on a paper slip; the amount is then transferred back to the accumulator numeral-wheels from the carriage number-wheels, the latter being reset to zero; then the sub-total key is automatically unlocked permitting the upward swinging of the accumulator to normal position, and the carriage is restored to its usual position.

When the total key is actuated, the carriage automatically slides into register with the accumulator and its number-wheels receive its amount. Then when the handle is operated the printing is effected, the key released, and the accumulator forced up -before the operating racks are restored, thus the amount is not re-transferred to the accumulator, the number-Wheels of the carriage are cleared, and the carriage is re stored to normal position. Obviously, when the total is required, the printing only is effected, and the entire machine is cleared, that is, all number-wheels are set back to zero.

The device also has means to insure that the carriage number-wheels must be cleared and the carriage restored before a total can be taken. In other'words, the operator cannot secure the total until all amounts previously set up in the machine have been registered on the accumulator.

In addition, the appliance has improved means to insure alinement of the type on the type or number-wheels and for bringing all of the accumulator or totalizer wheels to zero position.

The accomplishment of these and various other objects will be appreciated by those skilled in the art from an understanding of a preferred embodiment of the invention set forth in detail in the accompanying drawings forming a part of this specification, and throughout the various views of which like reference characters refer to the same parts, and from the following detailed description of such construction.

In the drawings:

Figure 1 is a plan view of the machine with the casing removed;

Fig. 2 is a plan view of the base portion of the appliance including the value key mechanism and the carriage escapement;

Fig. 3 is a side elevation;

Fig. 4 is a section just inside of the righthand side-wall;

Fig. 5 is a transverse section similar to that of Fig. 4, but nearer the middle of the machine;

Fig. 6 is a back view;

Figs. 7, 8, and 9 are carriage;

Fig. 10 is a detail sectional view through the accumulator;

Fig. 11 is a transverse section near the left-hand side-wall;

Fig. 12 is a fragmentary detail of the carriage escapement; and

Fig. 13 is a top plan View of a portion of the elements shown in elevation in Fig. 12.

Referring to the drawings, and more especially to Figs. 1 to 5 inclusive, it will be observed that the device comprises a baseplate 20, and an apertured upstanding front wall 21, the holes in which accommodate nine bars or levers 22 to 30 inclusive, bearing at their forwardly-projecting ends the keys 31, displaying the numerals 1 to 9 inclusive. These nine key levers are fulcrumed on the curved vertical wall 32 rising from the base 20 at the points 33 to 41 inclusive, the various levers being curved or bent as shown and having the'upstanding ends 42 to 49 inelusive arranged in a straight row transversely of the appliance, the lever 30 of the nine key being not extended substantially rearwardly of its fulcrum.

Located directly beneath all of the nine key levers 22 to 30 inclusive, is a bar 50 (Figs. 1 to 5 inclusive), rockingly mounted on pivot pins 51 and 52 by means of a pair of rearwardly-extended arms 53 and 54 fulcrumed thereon. A release lever 55 (Figs. 1, 2, 4, and 5), bent as shown, and fulcrumed at 56, has at its rear end an upstanding finger 57 located somewhat above the upwardly-bent ends of the key levers, as shown more clearly in Figs. 4 and 5. The forward end of the release lever 55 is bifurcated at 58 and straddles bar 50, being pulled detail views of the upwardly by a coil contractile spring 59 fastened to the lever and to a stationary part of the front-plate 21. It will be perceived,

therefore, that spring 59 acts to maintain all of the key levers normally in elevated position by reason of the co-action of the bar 50 therewith, the latter being maintained raised by the spring through the cooperation of bar 55.-

n The device also includes a space or zero bar 60 of elongated form belowand somewhat in front of the numeral keys and mounted on a pair of rearwardly-extending arms 61 and 62 fulcrumed on the pins or screws 51 and 52- and projecting through suitable apertures in the front-plate 21 of the casing. A pair of coil contractile springs 63 maintain the space or zero bar ordinarily in elevated normal position. Beneath the arms 53 and 54 of the key lever member 50 and the arms 61 and 62 of the zero bar, I provide a member 64 having a shorter bent end 65 fulcrumed on the pin 52, and at its other end a longer rearwardly-extended portion 66 fulcrumed on the pm 51 and having a pawl-operating bent end 67 near the back part of the machine. Obviously. whenever any number key or the zero bar is depressed, the bar 64 is rocked downwardly and the end 67 moved upwardly, for a purpose to be described hereinafter.

The appliance has also two end-walls 70 and 71, (Fig. 1,) afiording bearings for two longitudinal shafts 72 and 73 on which is adapted to slide a carriage equipped with selective number-wheels on which may be set up the number required to be added, multiplied, or the like. .2

This carriage, (Figs. 5, 7, 8, and 9), comprises an upper slotted plate 74and a lower slotted plate 75 fastened together near their front ends by two spaced bars 76 and 77 having bent end portions 78 and 79 respectively secured to the two plates. Near their rear ends, the plates are held apart and fastened together by a bar 80 having bent ends 81, 81 secured thereto, and adjacent to the bar 80, two brackets 82 are similarly fastened to the plates.

To provide for the anti-friction travel of the carriage on shaft 73, the bar 80 and the companion brackets 82 are equipped with two pairs of anti-friction rollers 83 and 84 adapted to roll on the top and bottom of the shaft. In order that the carriage may slide in an anti-friction manner on shaft 72, the two bars 76 and 77 are provided between them with two pairs of anti-friction rollers 85 and 86 traveling on the top and bottom surfaces of the shaft, and the two plates 74 and 75 are additionally equipped with two pairs of vertical rollers 87 and 88 adapted to engage the sides of the shaft.

This carriage has nine slidable ratchet or escapement members 89 to 97 inclusive, each of which has beside it a coil contractile spring 98 secured at its forward end to a lateral ear 99 on the member and at its rear end to an upstanding lug 100 on the plate 75. Each of these ratchet or escapement members has a lower forward portion 101, (Fig. 8), disposed between the plate 75 and the lower edges of the cross-bars 76 and 77, and it also has an upper rearwardly-extended portion 102 resting and adapted to slide on the top edge of the cross-bar 80. Plam 75 has nine slots 103 each adapted to accommodate a downwardly-extended finger 104 of the corresponding ratchet or escapement bar. Plate 74 also has nine parallel slots 105 each adapted to receive. an upwardly-extended ear 106 of the corresponding ratchetmember, each of the latter on its lower edge having ten ratchet or escapement shoulders 107. At its front end plate 75 has an upwardlybent flange 108 recessed at 109 for the reception of the nine ratchet or escapement members, this lower-plate 75' also having at its opposite sides two downwardly-bent ears 110 forming bearings for a shaft 111 on which are fixed the two rearwardy-extended arms 112, 112, of a cross-bar 113 having a lower foot 114, (Figs. 7 and 9).

On shaft 111 nine pawls 115 are also loosely mounted, each being in register and adapted to coiiperate with one of the ratchet or escapement members, and each having a tooth 116 projecting upwardly through one of the slots 103 and adapted to engage the various shoulders 107 of the corresponding ratchet bar. As is shown in Fig. 8, each pawl has a tail 117 and a forwardly-extended ear 118 beneath the release-bar 113 and connected by its own individual spring 119 to a lug 120 struck down out of the plate 75. Under normal circumstances, all of the nine pawls 115 engage the rearmost ratchet shoulders 107, maintaining all of the ratchet or escapement members in their forward positions, as shown in Figs. 8 and 9. Obviously if any pawl is released the corresponding ratchet member slides rearwardly under the contracting action of its independent and individual spring 98.

At its rear end, plate 75 is provided on its under surface with a transverse ratchet or escapement 121 and with a parallel rack 122, both formed on portions of the plate 75 bent down out of the plane thereof.

As is shown most clearly in Fig. 1. on top of this sliding carriage, two brackets 123 and 124 are mounted by means of feet 125 and securing screws 126, these upright brackets being connected together by a cross-bar 127, (Figs. 5 and 8). Near its rear end the carriage has mounted thereon a notched double cross-bar 128 disposed above the top surface of plate 74, (Figs. 1 and 8).

Slidable on the plate 74 and slotted at 129 and 130 for the accommodation of the cross-bars 127 and 128, and resting in the notches of the latter, there are provided nine rack bars 131'arranged above and in register with the ratchet or escapement members 89 to 97 inclusive. Each of these rack bars at its front end has a depending ear 132, and at about the middle of its length it has a shoulder 133 (Fig. 8), 00-

operating with the lug 106 of the corresponding ratchet-bar, and at its forward end it has a bent finger 134 to which one end of a coil contractile spring is fastened, the other end being secured to an ear 136 struck up out of the rear portion of the plate 74. These rack bars are, therefore, capable of independent sliding movement under the action of their own separate springs.

Each rack bar 131 is in mesh with the pinion 137 of a number-wheel 138 of which there are a number corresponding to the number of ratchet and rack members. These number-wheels are mounted side by side on a shaft 139 non-rotatably supported in bearings 140, 140, on the inner faces'of brackets 123 and 124, (Fig. 1). Also rotatably mounted in the brackets 123 and 124 is a shaft 141, (Figs. 1 and 5) provided with nine forwardly-projecting pawls or hooks 142 in register with and adapted to co5perate with the pinions 137 of the numberwheels on the carriage. Shaft 141 has an arm 143 extended over the bracket 124 and pivotally connected at 144 to the upper end. of an elongated hookunember 145 (Fig. 5) normally pulled upwardly by a coil contractile sprin 146 connected thereto and to the plate 75 of the carriage. It will be clear, therefore. that the action of this spring is to normally hold all of the pawls or hooks 142 in elevated or inoperative position.

As is shown in Fig. 7, the upper plate 74 of the sliding carriage is equipped with a vertical plate portion 147 provided on its top edge with nine upwardly-extended teeth 148.

From a consideration of Fig. 1, it will be seen that the selective number-wheels 138 on the sliding carriage, bear on their faces or peripheries the display numerals 149 and the alternately-arranged printing or type numerals 150 invertedly and alternately arranged in the manner illustrated.

The machine includes additionally a main longitudinal operating-shaft 151 (Figs. 2, 3, 4, 5, and 6), journaled in the side-walls and 71 of the frame and equipped exteriorly of the frame and the casing. adapted to contain the mechanism, (not shown), with a forwardlv-operating handle 152, (Fig. 6). Such longitudinal shaft has a bevel gear 153 (Fig. 2), meshing with another bevel gear 154 on a transverse shaft 155 journaled in bearings 156 and 157. Loosely mounted on this latter shaft is a gear sector 158 (Figs. 2, 4, 5, and 6), the teeth of which are in mesh with those of the rack 122 on the number-wheel carriage. A coil spring 159 encircles the hub of the sector 158 (Fig. 2), having an end 160 (Fig. 6) engaged with the sector and another end 161 bent over the edge of a As is shown in Figs. 2 and 5, this gear sector 158 has a forwardly-projecting tooth 163 by which it is actuated. Shaft 155 has an arm 164 fixed thereto and provided with two laterally-bent end portions 165 and 166, to the former of which a pawl 168 with a tooth 169 is pivoted at 167. One end of the pawl carries a roller 170,, the other end of the pawl being connected by a sprlng 171 to the companion arm 166, which spring holds the pawl normally in the position shown in Fig. 5. h

In order to provide'a track upon which the roller 170 can travel to cause the tooth 169 to operatively engage the tooth 163 of the sector, I provide a curved cross-bar 172 (Figs. 2 and 6), having bent ends 173 and .174 rockingly mounted on shaft 72 (Fig. 1), the arm 173 having a forward extension 175 equipped with a key 176 having a springcontrolled catch or hook 177 (Fig. 5), with a finger piece 178 just -beneath the key 176, such hook or catch when the key is depressed, being adapted to automatically engage a bar 179 (Figs. 1 and 5) fixed to the frame and hold the am 175 in lowered position, which means, of course, that the curved bar 172 is maintained in raised position. As is shown in Fig. 6, bar 172 has a downward projection 180 adapted under normal conditions to bear on the base plate and hold the bar in proper position.

Turning now to the escapement or release mechanism for the sliding carriage on which the selective number-wheels are mounted, it will be noted that at 181 (Figs. 2, 6, 12, and 13), on the bracket or standard 162, a lever 182 is pivoted, having an ofiset pawl or escapement tooth 183 normally engaging one of the ratchet or escapement teeth 121, thus preventing the carriage from responding to the action of spring 159 which tends to slide it along its supporting shafts. Another escapement tooth member 18 1 is pivoted on the same support 162, at 185, and has a tail-piece 184 overlying the pivoted member-18 2 as indicated inFigs. 2, 12 and 13. The two parts 182 and 18% are connected together by a coilcontractile spring 186 tendlng to rock the tooth 183 into engagement with the ratchet or escapement member 121 and to rock the tooth 184 downwardly away from the ratchet member, which is the normal osition of the parts as shown in Fig. 6. l ember 18 1 has a rearwardly-bent end 187 just above the arm 67 (Figs. 2 and 6), so that every time one of the number keys 31 or the zero or space bar is depressed, the escapement mechanism will be operated. Stated somewhat difierently, for each downward actuation of one of the value keys 31 or the zero bar 60 which may then be permitted to rise, the arm 67 will be raised and lowered, lifting the tooth 184 into the path of travel of the ratchet 121, releasing the tooth 183 and permitting the tooth 184 to again descend and the tooth 183 to rise, thus allowing bears on the baseplate of the appliance,

being yieldingly held in such position by a coil-spring 190 (Figs. 2 and 6), having one end 191 hooked over the edge of the part 188, its other end 192 engaging a lug 193 on the standard 162. Spring 190 is of superior strength relative to the spring 159 and is able to overcome or overpower the action of such weaker spring when permitted to do so.

The accumulator or totalize'r mechanism characterized as a whole 194, (Fig 1), is mounted on a flat cross-bar 195, having two upturned ends 196 and 197 hinged to the side-plates or side-walls 70 and-71 at 198- and 199 respectively, the plate or bar 195 having a vertical rear wall or flange 200 fixedly carrying a rearwardly-projecting pin 201 disposed above and coiiperating with a projection 202 F ig; 6) on a bell-crank lever 203, 204C, fulcrumed on a stud '206on a stationary cross-bar 205 of the frame, the dependin part 2041 of the lever carrying an anti-frlction roller 207 adapted to ride upon and coiiperate with the edge of the arcuate member 189, such roller-equipped art of the bell-crank lever being connecte to the cross-bar 205 by a coil contractile spring 208. It will be obvious, therefore, that when the operating-handle 152 is swung down forwardly, the arcuate member 189 swings to the right as the parts are viewed in Fig. 6, and the roller 207 by traveling on the top face thereof rocks downwardly the hinged member 195 and the accumulator ortotalize-r which it carries, in opposition to the lifting action of spring 208. When, however, the curved member 189 swings back to the left to its original position, the bell-crank lever 203, 20 1 is rocked in the opposite direction, thus not interfering with the accumulator and its support.

The accumulator 1194, (Figs. 1, 5, and 10), comprises a shaft 209 suitably supported in the end-walls 210, 210, the shaft having free to rotate thereon, nine numeral-wheels 211 to 219,inclusive, each displaying the numerals one to zero inclusive on its periphery, and each having rigid therewith a gear or pinion 220 with one tooth 221 wider than the others, (Fig. 1). Each numeral-wheel has a pivoted spring-actuated catch 222 positioned to cotiperate with the wide tooth 221 only, and by means of which the numeral-wheels may be set back to zero position. Each numeral-wheel has a slotted slide-bar 223 reciprocatory on two supports 224 and 225, pulled rearwardly by a spring 226, and normally maintained inadvanced or forward position, as shown in Fig. 10, by means of a shoulder 227 (Fig. 1), co acting with the bent end 228 of the catch 222 associated with the numeral-wheel of the next lower denomination, such catch being pulled downwardly int-o cooperativerelation with the slide shoulder by a spring 229. Every time the wide tooth 221 engages and actuates the end of catch 222, it releases the slide of the next numeral wheel, which, responding to the action of its spring, turns the wheel one point,- these means constituting the carrying mechanism. Each slide has a bifurcated member 230 pivoted thereto at 231 and equipped with a tooth 232 coiiperating with the gear of the corresponding numeral-wheel to lock the latter against rotation. All of the forward bifurcated ends of the members 230 straddle a stationary bar 233 fixed to the machine end walls 70 and 71. Obviously,these holding or locking teeth 232 must be removed from cotiperative relation with their gears before the numeral -wheels can be turned either to receive any designated amount or to respond to the carrying operation.

In order to restore the released or operated slides to their forward normal positions the machine includes a bar 234, (Figs. 1, 3, and 10), behind the lower portions of the slides and slidable bodily sidewise forwardly of the machine in slots 235 (Fig. 10) of the accumulator end-walls 210 and slots 236 (Fig. 3) in the other end-walls 196 and 197. \/V hen the bar thus moves forwardly it carries the previously retracted slides with it, permitting them to become latched by their catches 228.

The operating means for bar 234 comprises arms 237 (Figs. 1 and 3) hinged on the opposite end-walls 70 and 71 at 238 and having forward projections 239 carrying rollers 240 accommodated in cam slots 241 of cams 242 fixedly mounted on opposite ends of the main operating shaft 151. Bar 234 is yieldingly pushed rearwardly by springs 243 (Fig. 1) in barrels 244 mounted on the front face of wall 200 bearing against the enlarged ends of pins 245 secured to the bar and extended rearwardly through the barrels.

Each cam member 242 on its inner face has a roller 246 located in a cam slot 247 of a member 248 pivoted at 249, the other end of the member having a slot 250 accommodating pin 251 on a bell-crank 252 fulcrumed on the end wall at 253, such bell-crank lever being connected by a link 254 to one end of located between the rack bars 131 and the lower corresponding ratchet or escapement bars.

On the front faceof bar 255 on a pair of.

screws 257 (Figs. 1, 4, and 5), I mount a I I plate 258 vertically slidableby reason of slots therein accommodating the screws,the plate being normally depressed by a spring 259 (Fig. 1) so as to bring it into register with the shoulders 260 at the front endsjo-f the ratchet or escapement bars 8997. In order to raise this slide so that during its forward travel with the bar 255 it will escape or pass over the shoulders, a bent lever 261 is pivoted at 262 (Fig. 1) on the bar and. has a foot 263 below the slide and a top portion 264 beneath the arm 175, whereby depressionof key 176 raises the slide. I

On the'inner face of the end-wall 70 a slide-plate 270 is vertically reciprocable, being guided by screws 271' and shaft 72, and slotted for the accommodation of both. Such slide is adapted to operate the printing mechanism, not illustrated, but which may be substantially like that of my earlier U. S. Patent No. 1,098,353, granted May 26,

1914, and is forced downwardly by a spring 272, and in addition has a shoulder 273 on its front edge, a shoulder 274 on its back edge, and a rearward projection 275. A spring-controlled bell-crank catch 27 6 is adapted to co-act with the shoulder 274. A three armed lever 277 is pivoted at 278 on the end-wall, its upper arm having a lateral finger 279 and a shoulder 280, the front arm 281 being adapted to cotiperate with the lower portion of the projection 275 and the lower arm 282 havinga slot receiving a pin 282 on the adjacent cam 242. Under normal conditions, the slide is held raised against the action of its spring by the shoulder 280 underlying the rearward extension 275, the finger 279 at the same time by engagement with the bell-crank holding the latter retracted from shoulder 274.

An elongated horizontal plate 283 below the hook of member 145, (Figs. 2, 5, and 11), is rockingly mounted on shaft 151 by means of apertured legs 284 and is operatively con nected by a spring 285 to a lever 286 fulcrumed thereon at 287 and having an upper portion directly below the plate 283 acting by cooperation with the latter as a stop for the turning of the lever on its fulcrum. A

right-angle member 288 is pivoted to the lever 286 at 289 and has an extension 290 pulled upwardly by a spring 291 connected thereto and to the end wall 7 O at 292. At one end it has a bent lug 293 riding on and coacting with the front edge of the part 282,

and at its middle it has another bent lug 29,4 coperating with and ordinarily positioned beneath *and against the shoulder 273.

The mechanism so far as described operates practically as follows:

Assuming that it is desired to add 457,928 and 61,471, the operator depresses key 31 marked 4 (Fig 4) this raises stop 45 on lever and through the action of bar 50 which is depressed by lever 25, lifts finger 57, thus by striking its tail releasin pawl 115 from the first or left-hand ratc et or escapement bar 89 as the parts are viewed in Fig. 1, whereupon such bar slides rearwardly under the action of its spring 98 until its movement is'arrested by its stop 104 engaging stop 45, as shown by the near ratchet member in Fig. 5. Such rearward travel of stop 106 on the ratchet member permits the upper corresponding rack-bar 131 to slide in the same direction under the influence of its spring 135, the shoulder 133 following and having its movement limited by the lug 106.

The rack, through the pinion 137 in mesh therewith, turns its number-wheel 138 four steps so that at a suitable display opening in the casing, not shown, the display numeral 4 will show and the printing numeral 4 on the same wheel will have been brought into position for printing.

Such depression ofkey 4 raised pawl 184 into the path of travel of the first tooth of the 'escapement ratchet 121 and temporarily released pawl 183 therefrom, whereupon, under the influence of spring 159 acting through the toothed sector 158 and the rack 122 on the carriage, the latter moved over slightly, but not enough to cause non-register of the parts of the number-wheel operating-means described above.

Release of the finger pressure on the key 4 permits it to rise with the resulting descent of stop 45 and finger 57, which enables pawl 115 to again engage the ratchet or escapement bar and hold it in its new position against the retracting tendency of its spring 98.

Release of the key also causes the descent of pawl 184 and the elevation of pawl 183, which permits the carriage under the action of spring 159 to complete its full step over toward the accumulator. The actuated rackbar 131 of the carriage is now in register with the gear of the nearest numeral-wheel 211 of the accumulator or totalizer.

In like manner, the remainder of? the figures of the number 457,928 are set up in succession on the value keys 31 and, as will be readily understood, at each complete actuation of a key the carriage and its mechanism will be automatically ste ped over one unit of movement. After all of these six keys have been operated and the number registered on the carriage number-wheels, the six operated racks will be in register with the gears of the six totalizer numeralwheels 216, 215, 214, 213, 212, and! 211. When the 9 key is actuated, the rearward travel of the ratchet member on the carriage is restricted by its upper shoulder 104 striking the rear end of slot 103, and for this reason the lever on which the 9 key is mounted is not extended rearwardly of its fulcrum to any great extent.

It is now desired to print this item 457,928 from the type numerals on the numberwheels on the carriage, register the amount on the totalizer, reset the carriage numberwheels to zero, and return the carriage to normal, unoperated position, that is, to the right, as the parts are viewed in Fig. 1. To do this, the operator swings down the handle 152 which, of course, turns shafts 151 and 155 against the torsional action of the relatively-strong spring 190. The slide-plate 270 is unlatched from the shoulder 280 by reason of the rocking of the three-armed lever 277, and the plate descends due to the action of its spring 272, carrying with it the member 288 because its lug 294 is beneath the shoulder 273 on the slide. This, of course, causes a rocking of the horizontal plate 283, the descent of the hook member 145, and the temporary locking of all of the carriage number-wheels by the catches 142. In this way the number-wheels are locked against movement during the printing operation which prints those figures from the actuated number-wheels only, the others not having been stepped over into register with {the printing mechanism. Soon afterward the number-wheels are unlocked, the lug 294 being pushed forwardly and freed from the slide-shoulder 273 by the arm 282 engaging the lug 293 and carrying member 288 forwardly.

Near the lower end of the stroke of the operating handle, arm 281 of lever 277 contacts with the lower. portion of the slide projection 275 and lifts the slide, which is momentarily or temporarily held elevated by catch 276 co-acting'with shoulder 274. During the upward movement of the, handle the lug 294 travels back under the action of spring 292 until it is under the slide shoulder 273, whereupon the catch 276 is released by finger 279 and the slide held raised by shoulder 280 ready for action again. By thus raising the slide slightly above its normal positlon no difficulty is encountered in restoring lug 294 beneath the slide shoulder. I

At about the same time that the locking of the carriage number-Wheels is taking place, the arcuate member 189 immediately engages roller 207 and rocks bell-crank 203, 204, on its fulcrum 206, thus causing the projection 202 by contact with pin 201 to rock downwardly the totalizer or accumulator supports 195 and the parts carried thereon, hence carrying the gears of the six totalizer numeral-wheels 211 to 216 inclusive down into mesh with the locked actuated racks 131 beneath them and the gears of the remaining three totalizer numeralwheels 217, 218, and 219, which are not to be operated, down into locking engagement with the three teeth 148 of the member 147 nearest the racks.

Soon after the printing has been effected and the carriage number-wheels unlocked, and while the accumulator pinions are in mesh with the sliding racks and during the latter portion of the forward swinging of the operating-handle, the bar 255 and its slide plate 258 travel forwardly, restoring all of the actuated racks and ratchet members to their forward normal positions, in which relation they are retained in the usual way. This action re-sets the operated carriage number-wheels to zero position and at the same time transfers their previously reg istered amount to the totalizer numeralwheels.

At the end of the forward movement of the operating-handle, the roller 207 runs off of the end of the arcuate member 189, thus permitting the accumulator to rise, elevating its pinions out of mesh with and above the racks.

Also during the forward downward operation of the handle against the action of spring 190, the arm 164 swung over with shaft 155, the tooth 169- of the pawl 168 passing by the tooth or projection 163 on the sector 158. On the return movement of the handle, however, the tooth 169 is held in engagement with the projection 163 by reason of roller 170 traveling on the face of bar 172, whereby the superior strength of spring 190 overcomes that of the spring 159 and slides the carriage back to normal position, as shown in Fig. 1.

In order to compel a complete actuation of the handle and eliminate all possibility of the operator giving it only a partial movement, the edge of one of the cams 142 is provided with ratchet teeth 300 and a pawl 301 equipped with a spring 302 is piv oted on the corresponding end-wall at 303 and by coperation with the ratchet-teeth compels the complete movement specified.

In similar manner the number 61471 is set up on the carriage number-wheels by depressing the proper keys in succession; it is also rinted as the next item on the paper slip not shown) and is transferred to the accumulator numeral-wheels, the carriage automatically returning to its usual position. When the four (4) is added to the 9 already on the corresponding accumulator numeral-wheel the wide tooth of its gear in passing by the end of lever 222 rocks it, thus releasing the slide 223 of the numeral-wheel of the next higher value, and

the slide in moving back under the infiuence of the spring, through the hook 232, turns such higher wheel one step, thus performing the carrying operation. In like manner carrying is effected when the 6 is added to the 5.

After the total, 519,399 is registered on the accumulator, the slides-223 and their associated hook-members 230 of the two numeral-wheels displaying the 5 and 9, to

which carrying was done will be in a back or retracted position and not in register with the other corresponding parts.

On each forward turning of the handle, and as soon as the accumulator has been swung down and all of its gear-wheels freed from the hooks 232, which are maintained raised by the stationary bar 233, and all of such gear wheels are in mesh with the locked racks, the restoring bar 234 travels forwardly and restores all of the previouslyoperated slides 223 to their forward position, in which they are locked by their corresponding catches 228. This restoration occurs before the next item is transmitted to the totalizer or accumulator, so that these slides and their associated parts are then ready to perform any carrying operation necessary.

In case an error occurs in setting up, an amount on the number-wheels of the carriage, it can be detected through a display opening in the casing (not shown), before it is printed and before it is transmitted to the accumulator or totalizer, and these, operations, undesirable under such circumstances, can be prevented without interference with the clearing or resetting to zero of the carriage number-wheels and the return of the carriage to normal position.

The mechanism for doing this comprises an arm 304 (Figs. 1 and 4), fixed on shaft 72 and having a forward portion above the bar 255 provided with an error key 305 and a pivoted spring-actuated catch 306 with two shoulders 307 and 308 adapted to co-act with a lug 309 on the front-wall 21. This lever 304 has a hump 310 (Fig. 4) on its top edge, and at its back end has a bent part 311 (Figs. 1 and ,6) belowa bent end 312 of one arm of a bell-crank 313 pivoted at 314 on the part 205, the other arm having a rearwardly-projecting portion 315 beneath the arm 203 of the bell-crank carrying the roller 207. Obviously, when the error key is depressed, the bell-crank 203, 204, will be swung to the left so that the travel of the arcuate member 189 will not press the accumulator down into mesh with the carrier racks.

To revent the printing, the other end of shaft 2 has a short arm 316 fastened to it, which is pulled'backward by a spring 317 fastened thereto and to the end-wall 70. Such arm is adapted to co act with a lug 318 on the inner-face of the printing slidebar 270. Under normal circumstances, the

end of arm 316 is rearwardly out of the way of the lug 318, but upon downward pressure on key 305 it is swung into the path of lug 318, thus preventing the slide when unlocked from moving down under the influence of its spring and thus preventing the printing operation.

In this we when an error has occurred, which may cleared from the machine without printing and without registering on the accumulator.

' When such error key is depressed, it is mainyet somewhat difierent operations.

We will consider first the sub-total. This sub-total key 320 (Figs. 1 and 4) ,is mounted on a bent arm 321 rockingly supported on shaft 73 and provided with a deplendsing catch- 322 Fig. 4) pivoted thereto and equipped with a spring 323 fastened to it and to a fixed pin 324 projecting inwardly from the endwall 71. Such catch is designed to engage a fixed pin 322 (Fig. 4) on the end wall. At its rear upwardly extended end this lever 321 has a lateral lug 325 just back of an u standing arm 326, having a bent end 32 7, on the part 328 of a bent-bar 329 which part is also rockingly mounted on shaft 73. The other endv 330 of bar 329 is bent to extend forwardly and is rockingly mounted on shaft 7 3 and has a bent portion 331 adapted to overlie the ratchet member release foot 114 whenlhe carriage is over to the left to the extremity of its travel. This member 330 also has a lug or foot 332 (Fig.

6), intended upon depression of the key to overlie an enlargement or hump 333 on bar 66. The member 328 is connected by a link 334 to the back end of a rock-lever 335 fulcrumed on the inner face of the end-wall 1 at 336, and having an aperture 337 near its other end, which pivotally receives the curved terminal part 338 of a lever 339 fulcrumed on a standard on the base-plate at 340 and pulled up by a spring 341 connecting the lever with the bar 172. Such lever has an end-portion 342 underlying and adapted when swung up to engage and operate the tail of pawl 182, releasing it from the carriage ratchet 121 and permitting the carriage to slide over its full extent of moveeasily ,detected, it may be.

.in a slot353 receiving the pivot pin 354.

- means of lug 325 swings the projection 327 lever 313 (Fig. 6) and through it the bellment under the action of spring 159. Lever 339 has a lower part 343 adapted to cooperate with the edge of sector 158 .to insure such complete movement of the carriage.

Rock lever 335 at its front end has a tooth 344 adapted to co5perate with a tooth 345 on a cam-lever 346 rockable on a fulcrum pin 347 on the inner-face of end-wall 71. This lever is pulled down by a spring 348 and has a cam slot 349 of peculiar shape and in which fits a pin 350 semi-circular in crosssliction and mounted on the adjacent cam 3 2.

' As is depicted in Figs. 1, 3, and 6, the rear portion of the end-wall 197 oft he support carrying the accumulator is connected by a link 351 to the pivot pin 354 pivotally connecting the parts 328 and 334, such link being pivoted at 352 to the part 198 and hav- 0 print a sub-total, the operator presses key 320 which with its lever or arm 321 becomes locked down by catch 322 taking under pin 322*. This rocking of arm 321 by over the hump 310, thus temporarily preventing operation of the error key. The upward movement of bar 329 by the lug 325 co-acting with the arm 326, rocks the anglecrank lever 203, 204, carrying the roller 207 to the left, as viewed in Fig. 6, so that the subsequent swinging of the curved part 189 will not move or depress the accumulator. Through link 334, lever 335 is rocked, carrying the tooth 344 beneath the tooth 345, thus locking the parts in their new positions. The movement of lever 335 is transfrom its ratchet member, the carriage un- 106 der'the influence of spring 159, and possibly by reason of the'upward movement of arm 343, if the spring should fail, slides over to the left 'in register with the accumulator, and all of the carriage ratchet and rack slides are released by the downward movement of the part 331 striking the foot 114 of cross bar 113 and freeing all of the pawls 115 from the ratchet members, thus permitting the ratchet members and corresponding 115 racks to slide back as soon as the gears of the accumulator numeral -wheels are unlocked.

Near the end .of the downward stroke of the key 320, the pivot-pin or screw 354 arrives at the top. end of slot 353 and its continued movement in the same direction rocks the accumulator down, carrying its gears into mesh with the racks and unlocking such gears by reason of the fact that the hooks 232 remain suspended by the stationary bar 233. As soon as such meshing and unlocking occurs, the racks, under the action of their springs, slide back and turn the accumulator numeral-wheels all back to zero position, the wide teeth striking the stops 222. In this way, all of the accumulator wheels reach zero position, and the amount previously registered thereon is at the same time transferred to the number-wheels on the carriage. All this takes place merely upon depressing the sub-total key.

The operator now swings down the operating-handle, the printing is accomplished, the carriage number-wheels are all re-set to and locked in zero position, and simultaneously the amount previously registered thereon is re-transferred to the accumulator numeral-wheels, whereupon pin 350, near the end of the forward movement of the handle, rocks lever 346, freeing lever 335 and then the accumulator rises under the action of its spring 208, its wheels again become locked by hooks 332, and during the upward handle stroke the carriage slides back to normal or unoperated position.

Near the end of the forward handle stroke, the pin 350 strikes the lower part of catch 322 and frees it from lug 322 thus permitting the key to rise at the proper time.

Since the foot 332 by being positioned nor the sub-total key shall be operable so over the enlargement 333 while the key lever is locked depressed, prevents pawl 184 from being raised, there is no danger of the carriage not performing its full sliding movement when moving over into register with the accumulator.

The means for effecting the printing of a total and clearing all of the number-wheels both of the carriage and accumulator, comprises a lever 355 fulcrumed on shaft 7 3 and.

carrying at its forward end a key 356 and at its back end a lug 357 projecting laterally beneath the part 328 so that when the total key is depressed, all the parts will be operated just as when the sub-total key was actuated, except that such latter key is not pressed down. In order to clear all of the number-wheels and not re-transfer the amount to the accumulator-wheels, after it has been taken therefromand put on the carriage number-wheels, it is necessary to cause the accumulator to rise out of mesh with the racks before they are restored to zero position. In this way also the numberwheels are re-set to, zero position, the accumulatorwheels when their amount is transferred to the carriage wheels and the latter when their racks are drawn forward in the restoring operation. To cause this early rise of the accumulator, I provide the following parts:

On the pivot screw 199, (Fig. 3,) for the accumulator support, I mount an offset bent lever 358, one end of which is apertured to receive the pivot screw 352. On screw 199 I also fulcrum a lever 359 of the peculiar shape shown in Fig. 3, and I connect it by a Wardly from the total key lever.

rear portion of lever 355 rises, and pin 361:

riding on the edge 362 rocks lever 359 tothe left, as the parts are viewed in Fig. 3, the pin passing off of the edge and around the corner 365, thus acting as a lock both for the accumulator and key, the former having been swung down into operative association with the racks of the carriage. When the operating handle is actuated lug 364 engages the lower end of arm 359, rocking it and arm 358, thus unlocking the accumulator and key, the former being positively raised by arm 358 and the key returning to elevated position. This, of course, occurs before the carriage numberwheels are cleared so that their registered amount will not be set up again on the cleared accumulator.

It is desirable that neither the total key long as any amount is registered on the carriage number-wheels. In other words, means are provided for requiring that any amount so set up on the carriage numberwheels shall be transferred to the accumulator before a total or sub-total may be had.

To this end, on the bar 205, at 370, a lever 371 is fulcrumed, the lever having a carriage is in unoperated position, (Fig. 5), the lever being normally held in such position by a spring 373. The lower end of the lever has a shoulder adapted to co-act with a lug 374 on the bar 329. When the carriage is at its unoperated position, the lever shoulder is held away from the lug by the engagement of finger 372 With the carriage roller 87. As soon, however, as the carriage is moved over one step, the travel of the roller permits the lever to rock onits fulcrum, thus bringingthe lever shoulder above the lug, which prevents operation of either the total or sub-total keys.

100 forwardly projecting finger 372 contacting I wlth one of the carriage rollers 87 when the handle is then actuated a number of times one less than the multiplier, whereupon the key 176 is manually released and upon the next operation of the handle the final placing of the multiplicand on the accumulator is accomplished, the carriage numberwheels are cleared, and the carriage restored to unoperated position. It will be readily understood that upon each forward movementof the handle, the racks of the carriage are restored, but they immediately return to their determined by t e unrestored ratchet members. When the key is released, both the ratchet members and the racks are restored to and retained in normal unoperated position, the plate then acting simultaneously on both the shoulders 260 of the ratchet members and the shoulders 132 of the racks.

It should be noted that the operation of the space-key does not interfere with the action of the other parts so that in multiplication the depression of such key will permit the carriage to step along one place,

thus bringing the multiplicand into a position of next higher order-for the continuation of the operation, without interference with the means which restores the numberwheels and carriage to original position.

While in this application I have set forth in detail one desirable and preferred embodiment of the invention, it is to be understood that the invention is not limited and restricted to the precise and exact features of construction shown and disclosed because these may be varied within wide limiits without departure from the heart and substance of the invention and without the sacrifice of any of its substantial benefits and advantages.

I claim:

1. In a computing machine of the character described, the combination of a movable carriage, a plurality of number-wheels of difierent values on said carriage, means to operate said wheels, including a spring-retracted sliding escapement member on said carriage for each of said wheels, a set of value keys, pawls on said carriage cooperating with said escapement members, means actuated by said keys to stop the sliding movements of the escapement members at different value positions, means actuated by said keys to release said pawls, and means to step the carriage along at each actuation of a key, substantially as described.

'2. In a computing machine of the character described, the combination of a movable carriage, a plurality of number-wheels of different values on said carriage, means on said ,carriage to operate said wheels including a number-wheel pinion, a spring-actuated sliding rack in mesh with the pinion, and a spring-retracted sliding escapement revious value positions, as.

member for each of said wheels, a set of value keys, pawls on said carriage cooperating with said escapement members, means actuated by said keys to stop the sliding movements of the escapement members at different value positions, means actuated by said keys to release said pawls, and means to step the carriage along at each actuation of a key, substantially as described.

3. In a computing machine of the character described, the combination of a movable carriage, a plurality of number-wheels of different values on said carriage, means on said carriage to operate said wheels including a pinion for each number-wheel, a spring-actuated sliding rack in mesh with the pinion, and a spring retracted sliding escapement member for each of said wheels, a set of value keys, pawls on said carriage cooperating with said escapement members, means actuated by said keys to stop the sliding movements of the escapement members at different value positions, means actuated by said keys to release said pawls, a rack restoring means, cooperating shoulders on the escapement members and corresponding racks permitting restoration of the racks without modifying the positions of the escapement members and means to step the carriage along at each actuation of a key,

substantially as described.

4. In a computing machine of the character described, the combination of a movable carriage, a plurality of number-wheels of different values on said carriage, means on said carriage to operate said wheels including a spring-retracted sliding escapement member for each of said wheels, pawls on said carriage cooperating with said escapement members and adapted to hold them in various positions, a set of value keys, means actuated by said keys to stop the sliding movements of the escapement members at difi'erent value positions, means actuated by said keys to release said pawls individually, means to release all of said pawls simultaneously, and means to step the carriage along at each actuation of a key, substantially as described.

5. In a computing machine of the character described, the combination of a movable carriage, a plurality of number-wheels of different values on said carriage, means to operate said wheels including a spring-actuated sliding escapement member on said carriage for each of said wheels, a set of value keys, means actuated by said keys to stop the sliding movements of the escapement-members at difl'erent value positions, pawls on said carriage cooperating with said escapement members and adapted to hold them in unoperated position and difl'erent value positions upon release of the actuatedvalue keys, means actuated by said keys to release said pawls, and means to step the carriage along at each actuation of a key, substantially as described.

6. In a computing machine of the character described, the combination of a sliding carriage, a plurality of numbenwheels of different values on said carriage, means on said carriage to operate said wheels, including a number-wheel pinion, a spring-actw ated sliding rack in mesh with said pinion, and a spring-retracted sliding escapementmember for each of said Wheels, a set of value keys, means to step the carriage along at each actuation of a key, means actuated by the keys to stop the sliding movements of the escapement-members and racks at different value positions, pawls on said carriage cooperating with said escapement-members,

means actuated by said keys to release said pawls, means to restore said racks, numberwheels, and escapement-members to unoperated position, and means to temporarily prevent restoration of the escapement-members, substantially as described.

7. In a computing machine of the character described, the combination of a sliding carriage, a plurality of number-wheels of different values on said carriage, means on said carriage to operate said wheels, including a number-wheel pinion, a spring-actuated sliding rack in mesh with said pinion, and a spring-retracted sliding escapement member for each of said wheels, a set of value keys, means to ste the carriage along at each actuation of a ey, means actuated by the keys to stop the sliding movements of the escapement-members at different value positions, cooperating shoulders on said escapement-members and racks, pawls on said carriage cooperating with said escapement-members, means actuated by said keys to release said pawls, means to restore said racks, number -Wheels, escapemenb members and carriage to unoperated position, and means to temporarily prevent restoration of the escapement-members and the return of the carriage, substantially as de scribed.

8. In a computing machine of the character described, the combination of a sliding carriage, a plurality of number-wheels of different values on said carriage, means on said carriage to operate said wheels including a number-wheel pinion, a spring-actw ated sliding rack in mesh with said pinion, and a spring-retracted sliding escapernentmember for each of said wheels, a set of value keys, means to step the carriage along at each actuation of a key, means actuated by the keys to stop the sliding movement of the escapement-members and racks at different value positions, cooperating shoulders on said escapement-members and racks, pawls cooperating with said escapement-members,

means actuated by said-keys to release said pawls, a sliding bar, means to slide said bar, and a plate adjustable on said bar adapted during movement of the bar to engage and restore the racks and escapement-Inembers and adjustable to a position to temporarily escape restoration of the escapement-members, substantially as described.

9. In a computing machine of the character described, the combination of a sliding carriage, number-Wheels of diflerent values on said carriage, a set of Value keys, means to register on said carriage numberwheels the values of the actuated keys and move the carriage along one step at each actuation of the keys, an accumulator, an operating handle, and means upon actuation of said handle to rint the amount registered on the number-wheels of the carriage, transfer such amount to the accumulator, clear the carriage numbei wheels, and return the carriage to normal position, a total key, means upon 1 actuation of said total key to slide the carriage into register with the accumulator, transfer the amount registered on the accumulator to the carriage number-wheels, print such amount and clear the accumulator wheels, means to lock said total key in operated position, and means to release said total key upon completion of the rinting operation during manipulation 01 the operating handle, whereby during clearance of the carriage number-wheels, the registered amount is not retransferred to the accumulator, substantially as described.

10. In a computing machine of the character described, the combination of a sliding carriage, number wheels of different values on said carriage, a set of value keys, means to register on said carriage number-Wheels the values of the actuated keys and move the carriage along one step at each actuation of the keys, an accumulator, an operatinghandle, means upon actuation of said handle to print the amount registered on the number-wheels of the carriage, transfer such amount to the accumulator, clear the carriage number-wheels, and return the carriage to normal position, a total key, means u'pon actuation of said total key to slide the carriage into register with the accumulator, shift the accumulator into operative connection with the carriage number-wheels, transfer the amount registered on the accumulator to the carriage numberwheels, print such amount, and clear the accumulator wheels, means to lock said total key in operated position thus maintaining the accumulator in operative connection with the carriage number-wheels, and means to release said total key before clearance of the carriage number-wheels, permitting the accumulator to break the connection between the latter and the carriage number-wheels,

whereby during clearance of the carriage number-wheels the registered amount is not retransferred to the accumulator, substantially as described.

11. In a computing machine of the character described, the combination of a sliding carriage, number-wheels of different values on said carriage, a set ofvalue keys, means to register on said carriage number-wheels the values of the actuated keys and move the carriage along step by step, an accumulator, an operating-handle, means upon actuation of said handleto print the amount registered on the carriage number-wheels, transfer such amount to the accumulator, clear the carriage number-wheels, and return the carriage to normal position, a total key, means upon actuation of said total key to slide the carriage into register with the accumulator, transfer the amount on the accumulator to the carriage number-wheels, print such amount, and clear the accumulator wheels, and means to permit operation of said total key only when said carriage is in normal unoperated position, substanstantially as described.

12. In a computing machine of the character described, the combination of a sliding carriage, number-wheels of different values on said carriage, a set of value keys, means to register on the carriage numberwheels the values of the actuated keys and move the carriage along step by step, an accumulator, an operating-handle, means upon actuation of said handle to print the amount registered on the carriage numberwheels, transfer such amount to the accumulator, clear the carriage number-wheels, and return the carriage to normal position, a sub-total key, means upon actuation of said sub-total key to transfer the amount on the accumulator to the carriage numberwheels, clearing the accumulator wheels and print such amount, means to lock said sub-total key in operated position, and means to release said sub-total key upon completion of the printing operation and the re-transfer of the carriage numberwheel amount to the accumulator during manipulation of the operating-handle, whereby upon clearance of the carriage number-wheels their registered sub-total amount is re-transferred to the accumulator, substantially as described.

13. In a computing machine of the character described, the combination of a sliding carriage, number-wheels of different values on said carriage, a set of value keys, means to register on the carriage numberwheels the values of the actuated keys, and move the carriage along step by step, an accumulator, an operating-handle, means upon actuation of said handle to print the amount registered on the carriage numberwheels, transfer such amount to the'accumulator, clear the carriage number-wheels, and return the carriage to normal position, a sub-total key, means upon actuation of said sub-total key to slide the carriage into register with the accumulator, shift the accumulator into operative connection with the carriage number-wheels, transfer the amount registered on the accumulator to the carriage number-wheels, print such amount, and clear the accumulator wheels, means to lock said subtotal key in operated position thus maintaining the accumulator in operative connection with the carriage-number-wheels, and means to release said sub-total key after clearance of the carriage number-wheels, permitting the accumulator to break the connection between the latter and the carriage number-wheels, whereby during clearance of the carriage number-wheels the registered amount is retransferred to the accumulator, substantially as described.

14. In a computing machine of the character described, the combination of a sliding carriage, number-wheels of different values on said carriage, a set of value keys, means to register on said carriage number-wheels the values of the actuated keys and move the carriage along one step at each actuation of the keys, an accumulator, an operating handle, means upon actuation of said handle to print the amount registered on the number-wheels of said carriage, transfer such amount to the accumulator, clear the carriage number-wheels and return the carriage to normal position, a total key,

means upon actuation of said total key to sllde the carriage into register with the accumulator, shift the accumulator into operative connection with the carriage numberwheels, transfer the amount registered on the accumulator to the carriage numberwheels, print such amount, and clear the accumulator wheels, means to lock said accumulator in operative connection with said carriage number-wheels, and means to release said accumulator permitting breaking of said operative connection before clearance of the carriage number-wheels, whereby during clearance of the latter the registered amount is not re-transferred to the accumulator, substantially as described.

15. In a computing machine of the character described, the combination of a sliding carriage, number-wheels of different values on said carriage, a set of value keys, means to register on the carriage number- Wheels the values of the actuated" keys and move the carriage along step by step, an accumulator, an operating handle, means upon actuation of said handle to print the amount registered on the carriage numberwheels, transfer such amount to the ac- 

